I have an 84 Z28 and I am trying to remove the AC box from the firewall. I have removed all on the screws from the firewall but it still wont come out are there and screws that I need to take off inside the car???

 

There should be 2 or 3, pull back the carpet and they are right there.

 

ok first i want to say that i am sorry for the pic, not the best but hope it helps. there are 2 or 3 screws on the top, one on the side that is a bolt you take off then i think a ground wire then another bolt, and there are 3 on the bottom that you get to from inside. i tried to put the arrows as close to where i think they are. they will be in the inside where the passenger's feet go, you might have to pull back the padding a little. [IMG][/IMG]

if you need a better pic let me know i can get you one, this is all i had at the time

 

Ive did that yesterday, however my A/C box setup looked a little different (89)
However, remove the 10mm bolts u have circled and just shake it. The entire unit is cyliconed to the firewall. Use a screw driver to seperate it, or as i did - just rip it out

 

its not siliconed to the firewall, some one must have f-with yours

there are 2 screws by the passengers feet remove the lower dash piece and pull back the carpet a bit and you will see them there, make sure you take out the right ones, i think there are 1 or 2 that hold on something else and not the ac box

 

I just ripped all my heater/a\c junk out yesterday and I can tell you there are 8 total screws holding the a/c box onto the firewall (4 from firewall, 4 from passenger side footwell). There is a gasket that goes around the outside of the whole a/c box which you kinda have to pry it off from, other than that it should fall right out...

 

hmm, well, that explains why my a/c box refuses to budge, bolts in the passenger compartment eh?